Machine for producing frame parts



Jan. 5 1926.

. D. KARRON MACHINE FOR PRODUCING FRAME PARTS Filed July 5, 1924 3 Sheets- Sheet g Q Jafi. s ,1926. 1,568,739

D. KARRON MACHINE FOR PRODUCING FRAME PARTS Filed July 5, 1924 I5 Sheets-Sheet :3

34 r I I /j9 MI 3.3 1? i (I! Q! N I QM as zavzi arrow v Patented Jan. 5, 1926.

UNITED STATES. PATENT D AVID KABRON, 0F BROOKLYN, NEW YORK.

MACHINE FOR'PRGDUCING FRAME PARTS.

Application filed July 5, page Serial in, 724,522.

OFFICE.

To all whom it may concern .1

Be it known that I, DAVID KARRON, a citizen of the United States, and a resident of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Machines for Producing Frame Parts, of which the following is a specification.

This invention relates to'an improved machine for producing frame parts and has for its primary object to expedite the quantity production and minimize manufacturing cost of the frame parts of ladies hand bags and the like. As is well known, the frames of such'bags are of sheet metal of U-shaped cross-sectional form, the bag material of leather, cloth'or other fabric being suitably fixed or secured at its edges in the channels of the frame parts.

In my improved machine for producing such frame parts I propose to simultaneously die-stamp or cut the perforated ears of two frame parts in a sheet metal strip, and then accurately sever the strip between the connected ears into sections of definite length and finally bend each frame section into the required U shaped or channel form.

For the purpose of carrying out my present invention, I have devised a very simple machine for automatically performing the required operations and which may be actuated with great rapidity whereby such bag frames can be produced in very large quantities and at an appreciably less cost than is possible in the present state of the art.

With the above and otherobjects in view, the invention consists in the improved method and machine and in the combination and relative arrangement of the several machine elements, as will be hereinafter'more fully described, illustrated in the accom-' panying drawings and subsequently 1ncor-' porated in the subjoined claims.

In the drawings wherein I. have illustrated one simple and satisfactory embodiment-of my apparatus for carrying out my new method and in which similar reference characters designate corresponding parts throughout the several views: Figure 1 is a side elevation of the'machine; Figure 2 is a transverse section taken on the line 2-2 of Figure 1; I

Figure 3 is a similar section taken on'the line 3-3 of Figure 1;

Figure 4 is a fragmentary plan view showing the female cutting die; a Figure 5 is a transverse section taken on the line 5-5 of-Figure 1;

Figure 6 is a fragmentary longitudinal 9 section; v

Figure 7 is a perspective view showing the sheet metal strip after it has been operated upon by the cutting dies; and

Figure 8 is a similar view showing the frame part in its final completed form.

Referring in detailto the drawings, 5 designates the bed of the machine which is ri idly fixed to or anchored, upon a suitab e support. This machine bed adjacent one of its ends is formed with a vertically extendi'ng slot or openingi6 therein and "the upper surface of said base is provided with a lon-' gitudinally extending channel 7 therein to receive the die, plate 8 which extends over the opening 6. A series of screws 9 are transversely threaded in one side of the bed 5 for binding engagement with one edge of the die plate 8 to rigidly'fix the latter in place. 9

The die plate 8'is provided with transversely spaced openings 10 therein which communicate with the slot or openin in the bed, said die plate having integral y connected portions 11 between said openings corresponding in shape with the terminal ears to be formed on the frame parts, each part 11 of the die plate having a perfora tion 12 extending vertically therethrough.

The u per surface of the die plate 8-is fliish wit 1 the surface of the machine bed 5; and over said die plate the spaced longitudi-' nally extending guide plates 13 are arranged, the opposed edges of said guide plates being spaced'apart a sufiicient distance to receive and guide the sheet metal strip to be operated upon as indicated at 14. These guide plates are rigidly fixed in position by one or more members 15 arranged thereon and secured by the screws 16' passing through openings in said members and plates 13 and having threaded engagement in the die plate 8. The members 15 are provided with vertical openings corresponding with the openings 10 of the die plate as shown at 17, to receive and guide the vertically movable male cutting die 18 which is detachably mounted upon the under side of the vertically movable bar 19 between the plates 20 fixed to said her by screws 21. Any suitable means, not shown, may be provided for actuating the bar 19.

In longitudinally spaced relation to the opening 6 the machine bed is provided with a relatively narrow longitudinally extending slot 22 opening upon the upper surface thereof, said slot communicating at its lower side with a pocket or chamber 23 formed in the machine bed and which opens upon one side of said bed. An inclined directing plate 24 is fixed to the rear wall of this pocket upon which the completed frame members are deposited and discharged by gravity into a suitable collecting receptacle. 1

Upon the upper surface of the bed 5 at each side of the slot 22 the additional guide plates 25 are arranged, the edges of said plates contiguous to the opposite sides of the slot 22 being grooved as at 26 to receive the edges of the sheet metal strip. One of the plates 25 is rigidly fixed to the machine bed by suitable screws 27, while the other of said plates is transversely movable upon the surface of said bed. This plate is provided with spaced openings 28 registering with the openings 29 in the machine bed and at the inner side of each of said openings 28 a lug 30 is fixed upon said.plate 25. These lugs are adapted tobe engaged by the cam edges 32 on the lower ends of bars 31 which are loosely mounted at their upper ends upon screws 33 threaded in enlarged ends of rods 34 which extend transversely throu h the bar 19. The plate 25 is normally he (1 against inward sliding movement on, the machine bed by coil springs 35 which are connected at one of their ends to said plate and are secured at their other ends to bracket members 36 fixed to the side of the machine bed. Adjustable screws 31' co-operate with the bars 31 to regulate the movement of plate 25. v

At one end of the slot 22 there is suitably fixed in the machine bed a stationary knife block 37. To the underside of the bar 19 the longitudinally extending channel form'- ingmember 38 is suitably secured. said member being provided at one end with a verticall positioned knife 39, the lower sharpene edge 40 of which is adapted to co-act with the cutting edge of the stationary knife block '37. A short stud 41 also projects downwardly from the lower end of the knife bar 39 for a purpose to be presently referred to.

In operation, the sheet metal strip is fed longitudinally over the machine bed between the guide plates 14 and over the female cutting die 8. At the proper time, the bar 19 is lowered so that the male cutting die 18 carried thereby will be moved downwardly through the openings 17 in the guide mmebers 15 and into the openings 10 of the die plate 8, in which operation said male cutting die co-operates with the parts 11 of the female die to cut the sheet metal strip and remove the opposite side portions thereof to thereby form in said strip integrally connected ears 42 each having a perforation 43, the said ears corresponding in shape or form to the outline form of the die parts 11. One longitudinal edge of the sheet metal strip is slightly bent or flanged as at 44 before it is fed through the machine, and as the strip enters between the guide lates 25, this flanged edge thereof engages 1n the groove 26 of the fixed plate 25, while the other edge thereof enters the opposed groove in the edge of the shiftable guide plate 25. In this die cutting or stamping operation, that portion of the metal strip which has been previously provided with the ears 42 is bent into channel shaped form and discharged from themachine, said-portion or section of the strip being severed or out between the integrally connected ears. In order to be sure that the frame members or sections shall be of definite and unifrom length, the pin 41 enters the opening 43 in one of the ears and thus holds the strip against any possibility of longitudinal shifting movement, while at the same time, the sliding plate 25 is forced inwardly by the action of the cams 32 on bars 31 against the lugs 30 whereby the strip is rigidly fixed or held in position. As the member 38 moves downwardly, the cutting edge 40 of knife bar 39 engages the sheet metal strip between the ears 42 and co-operating with the cutting edge of the fixed knife block 37 cuts or severs said strip between the ears thereon. In the final operation of the downward movement of bar 19, the lower edge of the member 38 engages centrally upon the severed section of the sheet metal strip and forcing the same downwardly through the two frame sections and also sever one section frdm the continuous strip and bend the same into channel form. By means of such a machine, the frame members may be expeditiously formed with highly, accurate results. The machine may obviously be operated with great rapidity so that the quantity production of such frames can be materially increased and the manufacturing and selling cost of articles in which frames of this character are employed correspondingly reduced. p

In Figure 6 of the drawings I have indicated a gauge lug 46 fixed to the machine bed and extending into the slot or opening 22 adjacent one end thereof and which acts as a stop with which one end of the metal strip engages so that the said strip will be cut into sections of definite length by the knife bar 39. However, it will be understood that automatic means might be provided for feeding the sheet metal strip, in which case such a gauge member would not be necessary. It is also evident that in so far as the essential features ofmy present improvements are concerned, the same might be incorporated in other alternative forms of apparatus than that herein referred to and it is accordingly to be understood that I reserve the privilege of resorting to all such legitimate changes in the form,construction and relative arrangement of the various parts as may be fairly embodied within the spirit and scope of the invention as claimed.

I claim:

1. In a machine for making hand bag frames, guide means for a sheet metal strip including a movable clamping member, means for cutting the sheet metal strip at spaced points during periods of rest to form integrally connected ears therein, additional means for cutting the strip transversely between previously formed ears therein to sever a section of the strip having an ear at each of its ends, and means operated simultaneously with. said cutting means to actuate said movable guide member and fixedly clamp the strip against movement during the cutting operations. a

2. In a machine for making hand bag frames, guide means for a sheet metal strip including a movable clamping member, means for cutting the sheet metal strip at spaced points during periods of rest to form integrally connected ears therein, additional means for cutting the strip transversely between previously formed ears therein to sever a section-of the strip having an ear at each of its ends, means operated simultaneously with said cutting means to actuate said movable guide member and fixedly clamp the strip against movement during the cutting operations, and means engaging the severed section of the metal strip while the same is clampingly held in the guide means to bend said section-at transversely tegrally connected ears to sever the strip.

into sections each having an car at its opposite ends, and means for forcing said sectionsunder pressure through the slot in the bed plate to bend said section between the terminal ears thereof into transverse channel shaped form.

4. In a machine of the character described,

stationary and movable die members for cutting integrally connected ears in a sheet metal strip, means movable with the movable cutting die for cutting said strip between integral ears previously formed therein to sever a section from said strip having an ear at each end thereof, and means for transversely bending said severed section of the strip between the ears thereof into channel shaped cross-sectional form.

5. In a machine of the character described, stationary and movable die members for cutting integrally connected ears in a sheet metal strip, stationary and movable plates for guiding said strip after the ears have been cut therein, cam means for shifting said movable guide plate into clamping engagement with one edge of said strip, means movable with the movable cutting die and engageable with one of the previously formed ears in said strip to position the strip between said guide plates, means for cutting the strip transversely between the latter ears thereon to sever a section from said strip having an car on each end thereof, and means for finally bending said severed section ofthe strip transversely between the ears thereof'into channel shaped cross-sea tional form and discharging the same from the machine.

6. In amachine of the character described, a bed plate, a fixed guide on said bed plate, a movable guide on said bed plate opposed to said fixed guide, a spring yieldingly holding the movable guide in retracted position to permit the sliding movement of a sheet metal strip over the bed plate between said guides, a cutting die, and a cam member carried by said cutting die and coacting with the movable guide to urge said guide into clamping engagement with the sheet metal strip during the cutting operation.

7. In a machine of the character described, a slotted bed late, means for guiding a sheet metal strip over the slot in the bed plate, said means including a movable member, a die vertically movable above the bed plate, means carried by said die to actuate said movable member and clamp the strip against movement, said die having means for severing'a section from the strip, and additional means for forcing said severed sec- 1 tion under pressure through the slot in the bed plate and bending said section into transverse channel shaped form.

In testimon that I claim the foregoing as my invention, I have signed my name 15 hereto.

DAVID KARRON. 

